A measuring device for coaxiality of gearbox output shaft and docking shaft

Abstract

The utility model belongs to the field of measuring tool, specifically disclose a kind of for the measurement device of coaxiality of gearbox output shaft and butt joint shaft, including gearbox, ratchet gear, chain, transmission device and magnetometer, the gearbox be rectangular, and the left end surface of gearbox is equipped with input shaft;The ratchet gear includes connecting sleeve and big ratchet wheel;The connecting sleeve is sleeved on input shaft;Big ratchet wheel is installed on the outer wall of connecting sleeve by keying;Big ratchet wheel is connected with the transmission device of gearbox upper end face by chain;The right end surface of the gearbox is equipped with output shaft, and the right side of output shaft is equipped with alignment shaft;The magnetometer is installed on the outer wall of output shaft, and the measuring head of magnetometer is in contact with the outer wall of alignment shaft;The device structure is simple, and it is convenient to install, and it is convenient to adjust;It can greatly improve work efficiency, and can effectively reduce labor intensity, reduce labor cost.

Description

Technical Field

[0001] This utility model belongs to the field of measuring tools, specifically relating to a measuring device for measuring the coaxiality of the output shaft and the mating shaft of a gearbox. Background Technology

[0002] During operation, dynamometers need to reach a certain speed. To achieve high-speed rotation, the motor spindle is usually connected to the gearbox input shaft. The gearbox speeds up the machine, and then the gearbox output shaft is connected to the alignment shaft. If the gearbox output shaft and the alignment shaft are not on the same axis, the dynamometer will increase noise and vibration during high-speed operation. In severe cases, accidents may occur, causing equipment damage and personal injury.

[0003] When adjusting the coaxiality of the output shaft and the alignment shaft, a significant speed difference exists between the input and output shafts of the gearbox. Typically, the speed ratio between the input and output shafts is between 5 and 15, making it impossible to rotate the output shaft. Currently, the common method is to rotate the input shaft of the gearbox, causing it to drive the output shaft for measurement. However, the gearbox of the dynamometer is quite large, making it impossible for one person to operate. One person must rotate the input shaft while another observes the measurement data and adjusts the equipment accordingly. This process is inefficient, time-consuming, and wastes manpower and resources. Therefore, a solution to this problem is urgently needed. Utility Model Content

[0004] In view of the problems existing in the background art, the present invention provides a measuring device for the coaxiality of the gearbox output shaft and the mating shaft.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a measuring device for the coaxiality of the output shaft and the mating shaft of a gearbox, comprising a gearbox, a ratchet assembly, a chain, a transmission device, and a magnetic gauge. The gearbox is rectangular, with an input shaft on its left end face. The ratchet assembly includes a connecting sleeve and a large ratchet. The connecting sleeve is fitted onto the input shaft. The large ratchet is mounted on the outer wall of the connecting sleeve via a key. The large ratchet is connected to the transmission device on the upper end face of the gearbox via a chain. The right end face of the gearbox has an output shaft, and a alignment shaft is located to the right of the output shaft. The magnetic gauge is mounted on the outer wall of the output shaft, and the measuring head of the magnetic gauge is in contact with the outer wall of the alignment shaft.

[0006] The transmission device includes a base, fixing bolts, a drive shaft, a small ratchet, and a handwheel. The base is a square plate with through holes at each of its four corners. The fixing bolts pass through these through holes and are installed on the upper surface of the gearbox. The upper surface of the base has two bosses with through holes A on their end faces. The two through holes A are coaxial and contain bearings. The drive shaft passes through the inner ring of the bearings. A small ratchet is located at the left end of the drive shaft, and it is connected to a large ratchet via a chain. A handwheel with a handle is located at the right end of the drive shaft.

[0007] The outer diameter of the small ratchet is smaller than that of the large ratchet.

[0008] A tensioner for adjusting the chain is provided between the small ratchet and the large ratchet.

[0009] The connecting sleeve is a round tube, and the central hole A of the connecting sleeve is adapted to the input shaft. The connecting sleeve is connected to the input shaft by a key. The outer wall of the connecting sleeve is provided with a slot.

[0010] The central hole B of the large ratchet is adapted to the connecting sleeve, and a protruding key is provided on the side wall of the central hole B, which is adapted to the slot.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a measuring device for the coaxiality of the output shaft and the mating shaft of a gearbox. The device has a simple structure, is easy to install and adjust; it can greatly improve work efficiency and effectively reduce labor intensity and labor costs. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention.

[0013] Figure 2 This is the left view of the present invention.

[0014] Figure 3 This is the left view of the connecting sleeve.

[0015] Figure 4 This is a cross-sectional view of the connecting sleeve.

[0016] Figure 5 This is the front view of the large ratchet.

[0017] Figure 6 This is the front view of the transmission device.

[0018] Figure 7 This is the left view of the transmission device.

[0019] Figure 8 This is a top view of the base.

[0020] Figure 9 This is the left view of the base.

[0021] In the diagram: 1. Gearbox, 2. Ratchet mechanism, 3. Chain, 4. Transmission device, 5. Magnetometer, 6. Alignment shaft, 7. Tensioner, 11. Input shaft, 12. Output shaft, 21. Connecting sleeve, 22. Large ratchet, 23. Slot, 24. Center hole A, 25. Center hole B, 26. Raised key, 41. Base, 42. Fixing bolt, 43. Drive shaft, 44. Small ratchet, 45. Handwheel, 46. Through hole, 47. Boss, 48. Bearing. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The following is in conjunction with the appendix Figure 1-9 The specific embodiments of this utility model are further described in detail below: A measuring device for the coaxiality of the output shaft and the mating shaft of a gearbox includes a gearbox 1, a ratchet device 2, a chain 3, a transmission device 4, and a magnetic meter 5. The gearbox 1 is rectangular, and an input shaft 11 is provided on the left end face of the gearbox 1. The ratchet device 2 includes a connecting sleeve 21 and a large ratchet 22. The connecting sleeve 21 is a round tube and is sleeved on the input shaft 11. The central hole A24 of the connecting sleeve 21 is adapted to the input shaft 11, and the connecting sleeve 21 is connected to the input shaft 11 by a key. A groove 23 is provided on the outer wall of the connecting sleeve 21. The central hole B25 of the large ratchet 22 is adapted to the connecting sleeve 21, and a protruding key 26 is provided on the inner wall of the central hole B25. The protruding key 26 is adapted to the groove 23, and the large ratchet 22 is mounted on the outer wall of the connecting sleeve 21 by the protruding key 26. The large ratchet 22 is connected to the transmission device 4 on the upper end face of the gearbox 1 by the chain 3. The transmission device 4 includes a base 41, fixing bolts 42, a transmission shaft 43, a small ratchet 44, and a handwheel 45. The base 41 is a square plate with through holes 46 at its four corners. The fixing bolts 42 pass through the through holes 46 and are mounted on the upper surface of the gearbox 1. The upper surface of the base 41 has two bosses 47, and the end faces of the bosses 47 have through holes A. The two through holes A are coaxial and contain a bearing 48. The transmission shaft 43 passes through the inner ring of the bearing 48. The left end of the transmission shaft 43 has a small ratchet 44, which is connected to a large ratchet 22 via a chain 3. The right end of the transmission shaft 43 has a handwheel 45 with a handle. In actual use, to make turning the handwheel 45 easier, the diameter of the handwheel 45 should be larger than the diameter of the small ratchet 44. The outer diameter is smaller than that of the large ratchet 22. In actual operation, the greater the diameter difference between the small ratchet 44 and the large ratchet 22, the less effort is required during use, but the output shaft 12 rotates slower, and vice versa. A tensioning wheel 7 for adjusting the chain 3 is provided between the small ratchet 44 and the large ratchet 22. In actual use, the tensioning wheel 7 is installed on the gearbox 1 housing between the small ratchet 44 and the large ratchet 22. The function of the tensioning wheel 7 is to adjust the tension of the chain 3 so that the chain 3 is not easy to fall off. The right end face of the gearbox 1 is provided with the output shaft 12, and the right side of the output shaft 12 is provided with the alignment shaft 6. The magnetic force meter 5 is installed on the outer wall of the output shaft 12, and the measuring head of the magnetic force meter 5 is in contact with the outer wall of the alignment shaft 6. During the rotation of the output shaft 12, the coaxiality of the output shaft 12 and the alignment shaft 6 can be clearly observed from the magnetic force meter 5, which facilitates adjustment.

[0024] The usage process of this utility model is as follows: First, install the connecting sleeve 21 on the input shaft 11, then install the large ratchet 22 on the outer wall of the connecting sleeve 21 through the convex key 26, and adjust its position; then assemble the transmission device 4, and install the transmission device 4 on the upper end face of the gearbox 1 through the fixing bolts 42, and adjust its position; then, respectively, put the chain 3 on the small ratchet 44 and the large ratchet 22; after the chain 3 is installed, adjust the tension of the chain 3 through the tensioning wheel 7; during use, the operator turns... Handwheel 45 drives drive shaft 43 to rotate, drive shaft 43 drives small ratchet 44 to rotate, small ratchet 44 drives large ratchet 22 to rotate slowly via chain 3, large ratchet 22 drives input shaft 11 of gearbox 1 to rotate, thereby causing output shaft 12 to rotate; during the rotation of output shaft 12, the coaxiality of output shaft 12 and alignment shaft 6 can be clearly observed on magnetic gauge 5; at this time, the operator can adjust the equipment according to the measurement data, so that the coaxiality of output shaft 12 and alignment shaft 6 meets the tolerance requirements.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0026] The parts of this utility model not described in detail are existing technologies.

Claims

1. A measuring device for the coaxiality of the output shaft and the mating shaft of a gearbox, comprising a gearbox (1), a ratchet mechanism (2), a chain (3), a transmission mechanism (4), and a magnetic meter (5), characterized in that: The gearbox (1) is rectangular, and the left end face of the gearbox (1) is provided with an input shaft (11); the ratchet device (2) includes a connecting sleeve (21) and a large ratchet (22); the connecting sleeve (21) is sleeved on the input shaft (11); the large ratchet (22) is mounted on the outer wall of the connecting sleeve (21) by a convex key (26); the large ratchet (22) is connected to the transmission device (4) on the upper end face of the gearbox (1) by a chain (3); the right end face of the gearbox (1) is provided with an output shaft (12), and the right side of the output shaft (12) is provided with an alignment shaft (6); the magnetometer (5) is mounted on the outer wall of the output shaft (12), and the measuring head of the magnetometer (5) is in contact with the outer wall of the alignment shaft (6).

2. The measuring device for the coaxiality of the gearbox output shaft and the mating shaft according to claim 1, characterized in that: The transmission device (4) includes a base (41), a fixing bolt (42), a transmission shaft (43), a small ratchet (44), and a handwheel (45). The base (41) is a square plate, and the four corners of the base (41) are respectively provided with through holes (46). The fixing bolt (42) passes through the through holes (46) and is installed on the upper end face of the gearbox (1). The upper end face of the base (41) is provided with two bosses (47), and the end face of the bosses (47) is provided with through holes A. The two through holes A are coaxial, and a bearing (48) is provided in the through hole A. The transmission shaft (43) passes through the inner ring of the bearing (48). The left end of the transmission shaft (43) is provided with a small ratchet (44), and the small ratchet (44) is connected to the large ratchet (22) through a chain (3). The right end of the transmission shaft (43) is provided with a handwheel (45), and the handwheel (45) is provided with a handle.

3. The measuring device for the coaxiality of the gearbox output shaft and the mating shaft according to claim 2, characterized in that: The outer diameter of the small ratchet (44) is smaller than the outer diameter of the large ratchet (22).

4. The measuring device for the coaxiality of the gearbox output shaft and the mating shaft according to claim 2, characterized in that: A tensioner (7) with an adjusting chain (3) is provided between the small ratchet (44) and the large ratchet (22).

5. The measuring device for the coaxiality of the gearbox output shaft and the mating shaft according to claim 1, characterized in that: The connecting sleeve (21) is a round tube. The central hole A (24) of the connecting sleeve (21) is adapted to the input shaft (11). The connecting sleeve (21) is connected to the input shaft (11) by a key. The outer wall of the connecting sleeve (21) is provided with a slot (23).

6. The measuring device for the coaxiality of the gearbox output shaft and the mating shaft according to claim 5, characterized in that: The central hole B (25) of the large ratchet (22) is adapted to the connecting sleeve (21), and a protruding key (26) is provided on the side wall of the central hole B (25), which is adapted to the slot (23).

Images